Preliminary Analysis of Life within a Former Subglacial Lake Sediment in Antarctica
Abstract: Since the first descriptions of Antarctic subglacial lakes, there has been a growing interest and awareness of the possibility that life will exist and potentially thrive in these unique and little known environments. The unusual combination of selection pressures, and isolation from the r...
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ftunivnorthumb:oai:nrl.northumbria.ac.uk:16955 2023-05-15T13:35:33+02:00 Preliminary Analysis of Life within a Former Subglacial Lake Sediment in Antarctica Pearce, David Hodgson, Dominic Thorne, Michael Burns, Gavin Cockell, Charles 2013 application/pdf https://nrl.northumbria.ac.uk/id/eprint/16955/ https://doi.org/10.3390/d5030680 https://nrl.northumbria.ac.uk/id/eprint/16955/1/diversity-05-00680.pdf en eng MDPI https://nrl.northumbria.ac.uk/id/eprint/16955/1/diversity-05-00680.pdf Pearce, David, Hodgson, Dominic, Thorne, Michael, Burns, Gavin and Cockell, Charles (2013) Preliminary Analysis of Life within a Former Subglacial Lake Sediment in Antarctica. Diversity, 5 (3). pp. 680-702. ISSN 1424-2818 cc_by CC-BY F800 Physical and Terrestrial Geographical and Environmental Sciences Article PeerReviewed 2013 ftunivnorthumb https://doi.org/10.3390/d5030680 2022-09-25T05:59:39Z Abstract: Since the first descriptions of Antarctic subglacial lakes, there has been a growing interest and awareness of the possibility that life will exist and potentially thrive in these unique and little known environments. The unusual combination of selection pressures, and isolation from the rest of the biosphere, might have led to novel adaptations and physiology not seen before, or indeed to the potential discovery of relic populations that may have become extinct elsewhere. Here we report the first microbiological analysis of a sample taken from a former subglacial lake sediment in Antarctica (Lake Hodgson, on the Antarctic Peninsula). This is one of a number of subglacial lakes just emerging at the margins of the Antarctic ice sheet due to the renewed onset of deglaciation. Microbial diversity was divided into 23.8% Actinobacteria, 21.6% Proteobacteria, 20.2% Planctomycetes and 11.6% Chloroflexi, characteristic of a range of habitat types (overall, common sequences were neither distinctly polar, low temperature, freshwater nor marine). Twenty-three percent of this diversity could only be identified to “unidentified bacterium”. Clearly these are diverse ecosystems with enormous potential. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Ice Sheet Northumbria University, Newcastle: Northumbria Research Link (NRL) Antarctic Antarctic Peninsula Hodgson ENVELOPE(166.083,166.083,-78.117,-78.117) The Antarctic Diversity 5 3 680 702 |
institution |
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Northumbria University, Newcastle: Northumbria Research Link (NRL) |
op_collection_id |
ftunivnorthumb |
language |
English |
topic |
F800 Physical and Terrestrial Geographical and Environmental Sciences |
spellingShingle |
F800 Physical and Terrestrial Geographical and Environmental Sciences Pearce, David Hodgson, Dominic Thorne, Michael Burns, Gavin Cockell, Charles Preliminary Analysis of Life within a Former Subglacial Lake Sediment in Antarctica |
topic_facet |
F800 Physical and Terrestrial Geographical and Environmental Sciences |
description |
Abstract: Since the first descriptions of Antarctic subglacial lakes, there has been a growing interest and awareness of the possibility that life will exist and potentially thrive in these unique and little known environments. The unusual combination of selection pressures, and isolation from the rest of the biosphere, might have led to novel adaptations and physiology not seen before, or indeed to the potential discovery of relic populations that may have become extinct elsewhere. Here we report the first microbiological analysis of a sample taken from a former subglacial lake sediment in Antarctica (Lake Hodgson, on the Antarctic Peninsula). This is one of a number of subglacial lakes just emerging at the margins of the Antarctic ice sheet due to the renewed onset of deglaciation. Microbial diversity was divided into 23.8% Actinobacteria, 21.6% Proteobacteria, 20.2% Planctomycetes and 11.6% Chloroflexi, characteristic of a range of habitat types (overall, common sequences were neither distinctly polar, low temperature, freshwater nor marine). Twenty-three percent of this diversity could only be identified to “unidentified bacterium”. Clearly these are diverse ecosystems with enormous potential. |
format |
Article in Journal/Newspaper |
author |
Pearce, David Hodgson, Dominic Thorne, Michael Burns, Gavin Cockell, Charles |
author_facet |
Pearce, David Hodgson, Dominic Thorne, Michael Burns, Gavin Cockell, Charles |
author_sort |
Pearce, David |
title |
Preliminary Analysis of Life within a Former Subglacial Lake Sediment in Antarctica |
title_short |
Preliminary Analysis of Life within a Former Subglacial Lake Sediment in Antarctica |
title_full |
Preliminary Analysis of Life within a Former Subglacial Lake Sediment in Antarctica |
title_fullStr |
Preliminary Analysis of Life within a Former Subglacial Lake Sediment in Antarctica |
title_full_unstemmed |
Preliminary Analysis of Life within a Former Subglacial Lake Sediment in Antarctica |
title_sort |
preliminary analysis of life within a former subglacial lake sediment in antarctica |
publisher |
MDPI |
publishDate |
2013 |
url |
https://nrl.northumbria.ac.uk/id/eprint/16955/ https://doi.org/10.3390/d5030680 https://nrl.northumbria.ac.uk/id/eprint/16955/1/diversity-05-00680.pdf |
long_lat |
ENVELOPE(166.083,166.083,-78.117,-78.117) |
geographic |
Antarctic Antarctic Peninsula Hodgson The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Hodgson The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Ice Sheet |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Ice Sheet |
op_relation |
https://nrl.northumbria.ac.uk/id/eprint/16955/1/diversity-05-00680.pdf Pearce, David, Hodgson, Dominic, Thorne, Michael, Burns, Gavin and Cockell, Charles (2013) Preliminary Analysis of Life within a Former Subglacial Lake Sediment in Antarctica. Diversity, 5 (3). pp. 680-702. ISSN 1424-2818 |
op_rights |
cc_by |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3390/d5030680 |
container_title |
Diversity |
container_volume |
5 |
container_issue |
3 |
container_start_page |
680 |
op_container_end_page |
702 |
_version_ |
1766067065736658944 |